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by aeyes 1808 days ago
There were some comments in the early days that the Multi-AZ magic for classic RDS was just drbd on top of EBS.

Aurora is a completely different approach where the RDBMS code is modified to directly interface with EBS instead of going through a traditional OS filesystem layer.

1 comments

Amazon published a paper describing how Aurora works:

https://www.allthingsdistributed.com/files/p1041-verbitski.p...